64722477 has 8 divisors (see below), whose sum is σ = 88401600. Its totient is φ = 42095840.

The previous prime is 64722473. The next prime is 64722503. The reversal of 64722477 is 77422746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64722477 - 2² = 64722473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64722473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262977 + ... + 263222.

It is an arithmetic number, because the mean of its divisors is an integer number (11050200).

Almost surely, 2^64722477 is an apocalyptic number.

It is an amenable number.

64722477 is a deficient number, since it is larger than the sum of its proper divisors (23679123).

64722477 is a wasteful number, since it uses less digits than its factorization.

64722477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526243.

The product of its digits is 131712, while the sum is 39.

The square root of 64722477 is about 8045.0280919336. The cubic root of 64722477 is about 401.4995319022.

The spelling of 64722477 in words is "sixty-four million, seven hundred twenty-two thousand, four hundred seventy-seven".